This is on a traditional 3 bed semi detached house
We have a problem with black mould. It is on external soffit boards and builds up around upstairs windows too. In a few places it is internal on what I can best describe as the internal soffit immediately inside the windows.
The black mould on the soffit boards is mainly on a problem on the north side of the house, on the window frames - old aluminium double glazed unit about 15 years old - it tends to be all round the house, but on upstairs windows
Despite what I describe here I don't think we have an inherent structural damp problem, it just that this black mould, once set, seems to spread and I suspect will be difficult t get rid of.
Can anyone help with my options please. Like can I simply rub down and paint the soffit boards, could I PVC clad them or is more drastic action required.
Any advice or pointers to other discussion on this much appreciated.